A part flipping structure of a welding tool

Abstract

The utility model relates to a kind of part turnover structure of welding tool, including turnover frame installed on welding tool, the fixed assembly for fixing tubular part is provided on the turnover frame, the drive assembly for driving tubular part and fixed assembly turnover is provided on the turnover frame.This part turnover structure of welding tool, over setting positioning component, control component and mounting part, so that positioning rod is driven to expand by spring elastic force, cooperate with rubber sleeve and the flexible contact of tubular part inner wall, both can be through the uniform distribution of multiple point clamping of circumference Ensure that tubular part is not loose, can also avoid the extrusion deformation of rigid clamping to thin-walled or precision cylinder, surface scratch, and the elastic compensation effect of spring can be adapted to the small size deviation of workpiece, ensure that different position clamping force is consistent, and electric push rod controls positioning rod to be quickly folded, further shorten the installation process of tubular part, and certain diameter interval's tubular part can be adapted.

Description

Technical Field

[0001] This utility model relates to the field of welding tooling technology, specifically to a part flipping structure for welding tooling. Background Technology

[0002] Welding fixtures are specialized equipment designed to ensure the dimensional accuracy, positional accuracy, and welding quality of welded parts, achieving efficient and stable welding. Welding fixtures are classified into fixed welding fixtures, adjustable welding fixtures, and flexible fixtures according to their structural form, and into manual fixtures, pneumatic or hydraulic fixtures, electric fixtures, etc., according to their driving method. The core of a welding fixture consists of a flipping structure, a support and guiding structure, a base and a frame, etc. The flipping structure is composed of a positioning component, a driving component, and a flipping frame. The driving component is used to control the flipping of the positioning component and the parts, and the positioning component is used to position the welded parts.

[0003] Chinese Patent Publication No. CN117139974B discloses a welding device for processing cylindrical mechanical parts. It uses a cylinder and a lead screw to control the clamp to move to the opposite side and to position and flip the cylindrical part. In actual use, the clamp holds the cylindrical part, so that the clamping force is applied to the contact point between the clamp and the cylindrical part. For thin-walled cylindrical parts, the force is concentrated at the contact point, which can easily lead to local depressions, affect the ellipticity of the cylindrical part, cause misalignment of the joint, and easily cause scratches on the surface of the cylindrical part. Therefore, a part flipping structure of the welding fixture is proposed to solve the above problems. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a part flipping structure for welding fixtures, which has the advantage of expanding and positioning cylindrical parts. It solves the problem that in actual use, when the fixture holds the cylindrical part, the clamping force is applied to the contact point between the fixture and the cylindrical part. For thin-walled cylindrical parts, the force at the contact point is concentrated, which can easily lead to local depressions, affect the ellipticity of the cylindrical part, cause misalignment of the joint, and easily cause scratches on the surface of the cylindrical part.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a part flipping structure for a welding fixture, comprising a flipping frame mounted on the welding fixture, a fixing component for fixing a cylindrical part on the flipping frame, and a driving component for driving the cylindrical part and the fixing component to flip.

[0006] The fixing assembly includes two mounting components mounted on the flipping frame. Each mounting component is provided with a plurality of positioning components for fixing one side of the cylindrical part. One side of the mounting component is provided with a control component for controlling the expansion of the positioning components.

[0007] The mounting component includes a cylinder rotatably mounted on a tilting frame, with a support plate fixedly connected to one end of the cylinder and a connecting plate fixedly connected to the other end of the cylinder;

[0008] The control component includes a main shaft that is slidably connected to the inner wall of the cylinder, a limit plate that is fixedly connected to one end of the main shaft, and a spring that is sleeved on the main shaft;

[0009] The positioning component includes a positioning rod connected to the connecting plate, a rubber sleeve fixedly installed on the positioning rod, and two connecting rods hinged to the positioning rod, with one end of the connecting rod hinged to the main shaft;

[0010] The connecting plate has several guide grooves, one end of the positioning rod passes through and extends into the interior of the guide groove, and the positioning rod is slidably connected to the guide groove.

[0011] Furthermore, the mounting component is provided with a propulsion component for pushing the limiting plate to slide along the central axis of the cylinder.

[0012] Furthermore, the propulsion component includes a mounting bracket fixedly installed on one side of the support plate, and a limiting plate is slidably connected to the mounting bracket. An electric push rod collinear with the central axis of the main shaft is fixedly installed inside the mounting bracket.

[0013] Furthermore, the drive assembly includes a servo motor and two meshing gears, the two gears being fixedly mounted on the output shaft of the servo motor and the mounting component, respectively, and the servo motor being fixedly mounted on the tilting frame.

[0014] Furthermore, the number of positioning components is no less than four, and they are symmetrically distributed along the central axis of the main shaft, with the number of guide grooves matching the number of positioning components.

[0015] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0016] The part-flipping structure of this welding fixture, through the inclusion of positioning, control, and installation components, allows the positioning rod to expand via spring force. This expansion, combined with a rubber sleeve, creates flexible contact between the rod and the inner wall of the cylindrical part. This multi-point clamping, evenly distributed around the circumference, ensures the cylindrical part remains secure while avoiding the squeezing deformation and surface scratches caused by rigid clamping on thin-walled or precision cylindrical parts. Furthermore, the elastic compensation of the springs can accommodate minute dimensional deviations in the workpiece, ensuring consistent clamping force at different positions. An electric push rod controls the rapid retraction of the positioning rod, further shortening the installation process for cylindrical parts. Moreover, it can accommodate cylindrical parts within a certain diameter range, eliminating the need to change fixtures and reducing the cost of changing between different workpiece sizes. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is an enlarged view of the structural positioning component, control component, and propulsion component of this utility model;

[0019] Figure 3 This is an exploded view of the positioning component, control component, and propulsion component of this utility model.

[0020] Figure 4 This is a connection diagram of the positioning component, mounting component, and control component of the present invention.

[0021] Figure 5 This is a schematic diagram of the structure of the present utility model. Figure 4 Rear view;

[0022] Figure 6 This is an enlarged view of the structural positioning component of this utility model.

[0023] In the diagram: 1. Tilting frame; 2. Fixing component; 21. Mounting component; 211. Cylinder; 212. Support plate; 213. Connecting plate; 214. Guide groove; 22. Control component; 221. Main shaft; 222. Limiting plate; 223. Spring; 23. Positioning component; 231. Positioning rod; 232. Rubber sleeve; 233. Connecting rod; 24. Pushing component; 241. Mounting bracket; 242. Electric push rod; 3. Drive component. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Example 1: Please refer to Figure 1-6 The part flipping structure of a welding fixture in this embodiment includes a flipping frame 1 installed on the welding fixture, a fixing component 2 for fixing a cylindrical part on the flipping frame 1, and a driving component 3 for driving the cylindrical part and the fixing component 2 to flip.

[0026] Example 2: Please refer to Figure 1-6 Based on Embodiment 1, the fixing component 2 includes two mounting components 21 mounted on the flipping frame 1. The mounting components 21 are provided with a plurality of positioning components 23 for fixing one side of the cylindrical part. One side of the mounting components 21 is provided with a control component 22 for controlling the expansion of the positioning components 23.

[0027] Mounting component 21 includes a cylinder 211 rotatably mounted on the tilting frame 1, with a support plate 212 fixedly connected to one end of the cylinder 211 and a connecting plate 213 fixedly connected to the other end of the cylinder 211;

[0028] The control component 22 includes a main shaft 221 that is slidably connected to the inner wall of the cylinder 211. One end of the main shaft 221 is fixedly connected to a limit plate 222. A spring 223 is sleeved on the main shaft 221. The elastic compensation function of the spring 223 can adapt to the small size deviation of the workpiece, ensure that the clamping force is consistent at different positions, and avoid the rigid clamp from being too tight and deforming or too loose and sliding.

[0029] The positioning component 23 includes a positioning rod 231 connected to the connecting plate 213. A rubber sleeve 232 is fixedly installed on the positioning rod 231. Two connecting rods 233 are hinged on the positioning rod 231, and one end of the connecting rod 233 is hinged to the main shaft 221. The rubber sleeve 232 flexibly contacts the inner wall of the cylindrical part. It can ensure that the workpiece is not loose by circumferentially evenly distributed multi-point clamping, and avoid the extrusion deformation and surface scratches of thin-walled or precision cylindrical parts by rigid clamping. It is especially suitable for easily damaged materials such as stainless steel and aluminum alloy.

[0030] The connecting plate 213 has several guide grooves 214. One end of the positioning rod 231 passes through and extends into the interior of the guide groove 214, and the positioning rod 231 is slidably connected to the guide groove 214. The positioning rod 231 can slide and adjust the expansion range through the guide groove 214, which can adapt to cylindrical parts with a certain diameter range and reduce the changeover cost of multi-specification workpieces.

[0031] The drive component 3 includes a servo motor and two meshing gears. The two gears are fixedly mounted on the output shaft of the servo motor and the mounting component 21, respectively. The servo motor is fixedly mounted on the tilting frame 1. The servo motor and the two gears are used to control the tilting of the mounting component 21, and the tilting range is within 360 degrees.

[0032] In addition, there are no fewer than four positioning components 23, which are symmetrically distributed along the central axis of the main shaft 221. The number of guide grooves 214 matches the number of positioning components 23. Multiple positioning components 23 are used to support the inner wall of the cylindrical part, thereby making the force at the contact point uniform and avoiding uneven force distribution, which could cause the cylindrical part to shake or misalign the welding when it is flipped.

[0033] Using the above technical solution, the cylindrical part is sleeved on the retracted positioning component 23, and then the electric push rod 242 is controlled to retract. The limiting plate 222 slides in the opposite direction under the elastic action of the spring 223, thereby driving the main shaft 221 to slide synchronously. The moving main shaft 221 controls the positioning rod 231 to move away from the central axis of the main shaft 221 through the connecting rod 233 until the rubber sleeve 232 on the connecting rod 233 abuts against the inner wall of the cylindrical part, applying a uniform radial clamping force to the inner wall of the thin-walled cylinder, avoiding deformation such as dents and wrinkles caused by excessive local force, thereby achieving the fixation of the cylindrical part.

[0034] Example 3: Please refer to Figure 1-6 Based on Embodiment 2, the mounting component 21 is provided with a propulsion component 24 for pushing the limiting plate 222 to slide along the central axis of the cylinder 211. The propulsion component 24 includes a mounting bracket 241 fixedly installed on one side of the support plate 212, and the limiting plate 222 is slidably connected to the mounting bracket 241. An electric push rod 242 collinear with the central axis of the main shaft 221 is fixedly installed inside the mounting bracket 241. The control logic is simple, requiring only the extension and retraction of the electric push rod 242 and the start and stop of the servo motor, making it easy to integrate into the automated welding production line and reducing reliance on manual skills.

[0035] Using the above technical solution, the initial state of the positioning component 23 is the expanded state. The electric push rod 242 in the propulsion component 24 is activated, so that the telescopic end of the electric push rod 242 presses against the limiting plate 222, thereby causing the main shaft 221 to move along the axis of the cylinder 211. The positioning rod 231 is controlled to move towards the central axis of the main shaft 221 through the connecting rod 233, thereby controlling the positioning component 23 to be in the retracted state.

[0036] The working principle of the above embodiments is as follows:

[0037] When the part flipping structure of the welding fixture is in use, the positioning component 23 is initially in an expanded state. The electric push rod 242 in the propulsion component 24 is activated, so that the telescopic end of the electric push rod 242 presses against the limiting plate 222, thereby causing the main shaft 221 to move along the axis of the cylinder 211. The positioning rod 231 is controlled to move towards the central axis of the main shaft 221 through the connecting rod 233, thereby controlling the positioning component 23 to be in a retracted state.

[0038] The cylindrical part is fitted onto the retracted positioning component 23, and then the electric push rod 242 is controlled to retract. The limiting plate 222 slides in the opposite direction under the elastic action of the spring 223, thereby driving the main shaft 221 to slide synchronously. The moving main shaft 221 controls the positioning rod 231 to move away from the central axis of the main shaft 221 through the connecting rod 233 until the rubber sleeve 232 on the connecting rod 233 abuts against the inner wall of the cylindrical part, applying a uniform radial clamping force to the inner wall of the thin-walled cylinder, avoiding deformation such as dents and wrinkles caused by excessive local force, thereby achieving the fixation of the cylindrical part.

[0039] The servo motor in the drive assembly 3 is then started, and the mounting component 21 is rotated through two meshing bevel gears, thereby controlling the cylindrical part fixed by the positioning component 23 to flip.

[0040] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0041] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A part flipping structure for a welding fixture, comprising a flipping frame (1) mounted on the welding fixture, characterized in that: The flipping frame (1) is provided with a fixing component (2) for fixing the cylindrical part, and the flipping frame (1) is provided with a driving component (3) for driving the cylindrical part and the fixing component (2) to flip. The fixing component (2) includes two mounting components (21) mounted on the flipping frame (1). The mounting components (21) are provided with a plurality of positioning components (23) for fixing one side of the cylindrical part. The mounting components (21) are provided with a control component (22) for controlling the expansion of the positioning components (23) on one side. The mounting component (21) includes a cylinder (211) rotatably mounted on the tilting frame (1), with a support plate (212) fixedly connected to one end of the cylinder (211) and a connecting plate (213) fixedly connected to the other end of the cylinder (211). The control component (22) includes a main shaft (221) that is slidably connected to the inner wall of the cylinder (211), a limit plate (222) is fixedly connected to one end of the main shaft (221), and a spring (223) is sleeved on the main shaft (221). The positioning component (23) includes a positioning rod (231) connected to the connecting plate (213), a rubber sleeve (232) is fixedly installed on the positioning rod (231), and two connecting rods (233) are hinged on the positioning rod (231), and one end of the connecting rod (233) is hinged to the main shaft (221); The connecting plate (213) has several guide grooves (214), one end of the positioning rod (231) passes through and extends into the interior of the guide groove (214), and the positioning rod (231) is slidably connected to the guide groove (214).

2. The part flipping structure of a welding fixture according to claim 1, characterized in that: The mounting component (21) is provided with a propulsion component (24) for pushing the limiting plate (222) to slide along the central axis of the cylinder (211).

3. The part flipping structure of a welding fixture according to claim 2, characterized in that: The propulsion component (24) includes a mounting bracket (241) fixedly installed on one side of the support plate (212), and a limiting plate (222) is slidably connected to the mounting bracket (241). An electric push rod (242) colinear with the central axis of the main shaft (221) is fixedly installed inside the mounting bracket (241).

4. The part flipping structure of a welding fixture according to claim 1, characterized in that: The drive assembly (3) includes a servo motor and two meshing gears. The two gears are respectively fixedly mounted on the output shaft of the servo motor and the mounting component (21). The servo motor is fixedly mounted on the tilting frame (1).

5. The part flipping structure of a welding fixture according to claim 1, characterized in that: The number of positioning components (23) is not less than four, and they are symmetrically distributed along the central axis of the main shaft (221). The number of guide grooves (214) matches the number of positioning components (23).

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